What Is a Dump Valve?
Turbo-charged cars are renowned for their speed and need specialized components to attain high levels of speed and performance. A dump valve is one such component.
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Definition
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Dump valves are devices fitted in the engines of turbo-charged cars and are typically positioned between the throttle body and compressor, or turbo, outlet.
Function
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Dump valves stabilize compressor flow and prevent a turbo-charged engine from entering a state known as "surge." Surge can occur with a reduction in the compressor flow, which occurs when the throttle closes and pressure decreases. A reduction in compressor flow can cause the compressor to become unstable and possibly fail.
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Process
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Dump valves open when the throttle closes and either allows excess compressor flow to escape into the atmosphere or return to the compressor inlet safely. By maintaining a proper flow, the dump valve also draws energy from the rotating assembly and slows the turbo down more quickly.
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References
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- Photo Credit yellow race car image by goce risteski from Fotolia.com
